Functions: Current wind speed (3 second average); Average speed since power on (AVG); Maximum 3 second gust since power on (MAX); Data Hold
Measurement Units: Knots (kt), metres per second (m/s), kilometres per hour (km/h), miles per hour (mph), feet per minute (ft/min) and Beaufort Force (B)
Operating Range: 0.4m/s to 60m/s (0.8 to 135.0mph)
Specification Range: 0.4m/s to 40m/s (0.8 to 89.0mph)
On-axis Accuracy: ±3% of reading or least significant digit, whichever is the greater
Off-axis Response: -1% at 5º, -2% at 10º, -3% at 15º
Calibration Drift: <1% after 100 hours operation at 7m/s
Resolution: 0.1 kt, m/s, km/h, mph. 1 ft/min below 1999 ft/min, 10 ft/min above 2000 ft/min. 1 Beaufort (0 to 12)
Operating Temperature: -10ºC to +55ºC (14ºF to 131ºF)
Storage Temperature: -30ºC to +60ºC (-22ºF to 140ºF)
Power Supply: 1 x CR2032 Lithium Coin Cell
Battery Life: Approximately 300 hours
Auto Switch Off: 45 minutes after last key press
Dimensions: Instrument Only: 122 x 42 x 20mm; Instrument and Protective Cover: 122 x 46 x 26mm
Weight: Instrument Only: 65g; Instrument and Protective Cover: 102g 
Packing List: Elcometer 410 Anemometer, protective cover, lanyard, 1 x CR2032 battery and operating instructions.